KB4489150 - FIX: Filtered index may be corrupted when you rebuild index in parallel in SQL Server 2014, 2016 and 2017


Assume that you create or rebuild a filtered index in Microsoft SQL Server 2014, 2016 or 2017. When you try to create or rebuild the filtered index, if the optimizer picks a parallel index intersection (join) plan, then the resulting index may be corrupted. Subsequent queries may produce wrong results and subsequent inserts, updates and deletes may encounter errors.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


This issue is fixed in the following cumulative updates for SQL Serve

About cumulative updates for SQL Server:

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server


Learn about the terminology that Microsoft uses to describe software updates.

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